安徽省主要作物秸秆养分资源量及还田利用潜力

柴如山,徐悦,程启鹏,王擎运,马超,叶新新,章力干,郜红建

Nutrient Resource Quantity of Main Crop Straw and Utilization Potential Under Straw Returning in Anhui Province

CHAI RuShan,XU Yue,CHENG QiPeng,WANG QingYun,MA Chao,YE XinXin,ZHANG LiGan,GAO HongJian

表1 不同作物的草谷比、秸秆养分含量和还田秸秆养分当季释放率

Table 1 Straw/grain ratio of different crops, nutrient contents in straws and in-season nutrient release rates of returned straws

作物 Crop 草谷比[17] Straw/grain ratio 秸秆养分含量[23] Nutrient content (g·kg-1) 秸秆养分当季释放率[17] In-season nutrient release rate (%) N P K N P K 水稻Rice 1.08 9.1 1.3 18.9 47.19 66.69 84.91 小麦Wheat 1.39 6.5 0.8 10.5 50.11 62.01 89.05 玉米Maize 1.29 9.2 1.5 11.8 54.04 73.03 84.43 油菜Rapeseed 2.64 8.7 1.4 19.4 52.65 66.31 82.18